The Second World War started because the three major expansionist “Axis” powers—Fascist Italy, Nazi Germany, and Imperial Japan—wanted to conquer other countries and build empires. In that respect, one could date the war in Asia back to 1931, when Japan invaded China.

What is one way that the war in Asia was different from the in Europe? The war in Asia was fought mostly by naval forces. The war in Asia was fought mostly with atomic weapons. The Allies lacked strong leaders in the fight in Asia.

Causes of World War II

• The Failure of Peace Efforts.
• The Rise of Fascism.
• Formation of the Axis Coalition.
• German Aggression in Europe.
• The Worldwide Great Depression.
• Mukden Incident and the Invasion of Manchuria (1931)
• Japan invades China (1937)
• Pearl Harbor and Simultaneous Invasions (early December 1941)

What did the United States do after World War II began in Europe? President would lend or lease arms and other supplies to nation whose defense was important to the U.S.

Not a full answer, but no US infantry units served in both theaters. It wasn’t uncommon for USAAF crews to fly a complete tour in Europe and then transfer to the Pacific theater, but this was on a man per man basis, not entire units.

25 million people

Because of the distance between the war theatres, warfare in the Far East and the Pacific region was of different manner in relation to Europe. The main burden was loaded on the back of the poor infantryman.

The United States home front during World War II supported the war effort in many ways, including a wide range of volunteer efforts and submitting to government-managed rationing and price controls. There was a general feeling of agreement that the sacrifices were for the national good during the war.